M2.3 earthquake 37 km NNE of Amboy, Washington
A magnitude 2.3 earthquake struck 37 km NNE of Amboy, Washington on Mon, Dec 29, 2003, 4:13 PM PST (00:13 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M3.0 5 km NW of North Portland, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 2003-12-30 00:13:04 UTC
- Depth
- 0.3 km (0.2 mi), shallow
- Epicenter
- 46.200° N, 122.189° W
- Region
- Washington
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 0.4 km horizontally, 0.3 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 53°
- Stations used
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.15 km WNW of North Portland, Oregon · 8302 days ago · 17 km deep · 77 km away
- 2.019 km NNE of Ashford, Washington · 8295 days ago · 12 km deep · 82 km away
- 2.023 km ENE of Ashford, Washington · 8292 days ago · 1 km deep · 79 km away
- 1.815 km ENE of Kalama, Washington · 8291 days ago · 8 km deep · 40 km away
- 1.52 km SE of Portland, Oregon · 8272 days ago · 18 km deep · 85 km away
- 3.05 km NW of North Portland, Oregon · 8254 days ago · 19 km deep · 76 km away · felt by 51
- 2.06 km NW of North Portland, Oregon · 8253 days ago · 19 km deep · 76 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10594513. Read Fri, Oct 2, 2026, 10:00 AM UTC.